Year	annual %
1961	4.395564619345852
1962	4.370188244036751
1963	4.338763991690424
1964	4.222913736485844
1965	4.068828754228473
1966	4.599942363624464
1967	4.91011920192551
1968	4.825276870731029
1969	4.670585041995763
1970	4.534123290700901
1971	4.1206621347877945
1972	3.9197734374535576
1973	3.8821464529087906
1974	3.803469816465936
1975	3.6776930646683317
1976	3.2616227666491535
1977	3.156114209913382
1978	3.1570331145910813
1979	3.0775579125433694
1980	3.04163832929514
1981	5.172439595557564
1982	6.0524060156850545
1983	6.104847041008303
1984	5.936020238473546
1985	5.717517042489766
1986	4.895635951352277
1987	4.460836889263359
1988	4.352856968241638
1989	4.24200728313129
1990	4.120633060317403
1991	3.115921597302114
1992	2.65713933766769
1993	2.633449478924963
1994	2.6271270326031138
1995	2.554085518548579
1996	2.5022434399070383
1997	2.4542869698860676
1998	2.388145358645546
1999	2.3173135883846765
2000	2.261228860116569
2001	2.404867540521277
2002	2.3644648138250646
2003	2.2701376011055854
2004	2.2942180970366928
2005	2.2582580075155225
2006	2.1917434516662238
2007	1.673849984654072
2008	2.1278762300975873
2009	2.2238166782506634
2010	2.3474167836310076
2011	2.2791578970514306
2012	2.072623986018192
2013	2.055325341465339
2014	2.0990508474645986
2015	2.062196295212247
2016	2.0534041443481774
2017	1.9823437336321044
2018	2.0198849005438264
2019	2.075703123251821
2020	1.5964808241467603
2021	1.5182775132479822
2022	1.5744667681167026
2023	0.9773599375401898